Click any word in a definition or example to find the entry for that word
90% of the time, speakers of English use just 7,500 words in speech and writing. These words appear in red, and are graded with stars. One-star words are frequent, two-star words are more frequent, and three-star words are the most frequent.
The thesaurus of synonyms and related words is fully integrated into the dictionary entries. Click on the T button in an entry to review the synonyms and related words for that meaning.more
Experiments show that many plants tolerate a wide range of light conditions.
laboratory experiments using electric shocks
a series of experiments on animals
Researchers now need to conduct further experiments.
Let's try an experiment – we'll only use the Internet on the weekend.
an experiment in tax reform
This is the American English definition of experiment. View British English definition of experiment.
a plan or course of action that is not possible to achieve